import { app, shell, BrowserWindow, ipcMain, dialog } from 'electron'
import { join } from 'path'
import { electronApp, optimizer, is } from '@electron-toolkit/utils'
import icon from '../../resources/icon.png?asset'
import { addQRCodeToPdf, selectSaveDirectory } from './service/pdfService.js'
import fs from 'fs'
import * as pdfjsLib from 'pdfjs-dist'
// require('./service/attachService.js')
import attachService from './service/attachService.js';


function createWindow() {
  // Create the browser window.
  const mainWindow = new BrowserWindow({
    width: 900,
    height: 670,
    show: false,
    autoHideMenuBar: true,
    ...(process.platform === 'linux' ? { icon } : {}),
    webPreferences: {
      preload: join(__dirname, '../preload/index.js'),
      sandbox: false,
      // webSecurity: false
    }
  })

  mainWindow.on('ready-to-show', () => {
    mainWindow.show()
  })

  mainWindow.webContents.setWindowOpenHandler((details) => {
    shell.openExternal(details.url)
    return { action: 'deny' }
  })

  // HMR for renderer base on electron-vite cli.
  // Load the remote URL for development or the local html file for production.
  if (is.dev && process.env['ELECTRON_RENDERER_URL']) {
    mainWindow.loadURL(process.env['ELECTRON_RENDERER_URL'])
  } else {
    mainWindow.loadFile(join(__dirname, '../renderer/index.html'))
  }
}

// This method will be called when Electron has finished
// initialization and is ready to create browser windows.
// Some APIs can only be used after this event occurs.
app.whenReady().then(() => {
  // Set app user model id for windows
  electronApp.setAppUserModelId('com.electron')

  // Default open or close DevTools by F12 in development
  // and ignore CommandOrControl + R in production.
  // see https://github.com/alex8088/electron-toolkit/tree/master/packages/utils
  app.on('browser-window-created', (_, window) => {
    optimizer.watchWindowShortcuts(window)
  })

  // IPC test
  ipcMain.on('ping', () => console.log('pong'))

  // PDF相关IPC处理器
  ipcMain.handle('select-pdf-file', async () => {
    const result = await dialog.showOpenDialog({
      properties: ['openFile'],
      filters: [
        { name: 'PDF Files', extensions: ['pdf'] }
      ],
      title: '选择PDF文件'
    })
    
    if (!result.canceled && result.filePaths.length > 0) {
      return result.filePaths[0]
    }
    return null
  })

  ipcMain.handle('read-pdf-file', async (event, filePath) => {
    try {
      console.log('主进程读取PDF文件:', filePath);
      const buffer = fs.readFileSync(filePath);
      console.log('文件读取成功，大小:', buffer.length, '字节');
      return { success: true, data: Array.from(buffer) };
    } catch (error) {
      console.error('读取PDF文件失败:', error);
      return { success: false, error: error.message };
    }
  })

  ipcMain.handle('add-qr-code-to-pdf', async (event, params) => {
    try {
      const pdfBytes = await addQRCodeToPdf(params)
      return { success: true, data: pdfBytes }
    } catch (error) {
      return { success: false, error: error.message }
    }
  })

  ipcMain.handle('select-save-directory', async () => {
    return await selectSaveDirectory()
  })

  ipcMain.handle('save-pdf-file', async (event, { pdfBytes, fileName }) => {
    try {
      const savePath = await dialog.showSaveDialog({
        defaultPath: fileName || 'output.pdf',
        filters: [
          { name: 'PDF Files', extensions: ['pdf'] }
        ],
        title: '保存PDF文件'
      })
      
      if (!savePath.canceled && savePath.filePath) {
        fs.writeFileSync(savePath.filePath, pdfBytes)
        return { success: true, filePath: savePath.filePath }
      }
      return { success: false, error: '用户取消了保存' }
    } catch (error) {
      return { success: false, error: error.message }
    }
  })

  pdfjsLib.GlobalWorkerOptions.workerSrc = './pdf.worker.js'

  createWindow()

  app.on('activate', function () {
    // On macOS it's common to re-create a window in the app when the
    // dock icon is clicked and there are no other windows open.
    if (BrowserWindow.getAllWindows().length === 0) createWindow()
  })
})

// Quit when all windows are closed, except on macOS. There, it's common
// for applications and their menu bar to stay active until the user quits
// explicitly with Cmd + Q.
app.on('window-all-closed', () => {
  if (process.platform !== 'darwin') {
    app.quit()
  }
})

// In this file you can include the rest of your app's specific main process
// code. You can also put them in separate files and require them here.
